Seperangkat kartu bridge terdiri dari 52 kartu, yaitu 13 kartu hati (♥), 13 kartu wajik (♦), 13 kartu sekop (♠), dan 13 kartu keriting (♣).
Oleh karena itu, dalam pemilihan satu buah kartu, banyaknya titik sampel adalah
.
Kemudian, akan dicari peluang terambil kartu merah atau King.
Misalkan A adalah kejadian terambil kartu merah dan B adalah kejadian terambil kartu King.
Kartu yang berwarna merah adalah kartu hati dan wajik, dengan masing-masing terdapat 13 buah kartu. Oleh karena itu, banyaknya kartu yang berwarna merah ada 26 buah, sehingga
. Dengan demikian, peluang kejadian A adalah sebagai berikut.
![begin mathsize 14px style P open parentheses A close parentheses equals fraction numerator n open parentheses A close parentheses over denominator n open parentheses S close parentheses end fraction equals 26 over 52 end style](data:image/png;base64,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)
Kemudian kartu King terdapat 4 buah, yaitu King hati, King wajik, King sekop, dan King keriting sehingga
. Oleh karena itu, peluang kejadian B adalah sebagai berikut.
![begin mathsize 14px style P open parentheses B close parentheses equals fraction numerator n open parentheses B close parentheses over denominator n open parentheses S close parentheses end fraction equals 4 over 52 end style](data:image/png;base64,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)
Dari kartu-kartu tersebut terdapat 2 kartu King yang juga berwarna merah, yaitu King hati dan King wajik. Maka
sehingga didapatkan
![begin mathsize 14px style P open parentheses A intersection B close parentheses equals fraction numerator n open parentheses A intersection B close parentheses over denominator n open parentheses S close parentheses end fraction equals 2 over 52 end style](data:image/png;base64,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)
Peluang terambil kartu merah atau King adalah sebagai berikut.
Jadi, jawaban yang tepat adalah D.